Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable--if anything is excellent or praiseworthy--think about such things. Philippians 4:8
What we think on is very critical. Idol minds and wandering minds often can make a person say or do something they regret later. Sometimes we may imagine things that are not actually real such as what someone is thinking or what is going to happen to us. Just how does a person discipline his mind and his thinking? If you tend to be impulsive it is even more important to capture your thoughts to the obedience of Christ as it says in 2 Corinthians 10:5.
Satan comes against us through our thought life. If you constantly dwell on doom and gloom then that is the kind of life you will lead. We are to keep our thoughts on 'things above' in order to be thinking like Christ. Worrying about being laid off, fired, going broke, the world ending, and things such as this is not 'uplifting thinking'. If you trust God you should be able to relax and know He holds the future.
If you get in this bad thought habit start praising God out loud and also out loud tell Satan to get behind you as he is puny and has no control over you. He is only trying to make you ineffective for the Kingdom of God. Don't let him!
PRAYER: My mind is set on you now Lord and I will not allow the enemy to make me start having worldly thinking. You are in control and I trust my life and my thoughts to you. In Jesus' name. Amen.